/* ============================================================
   Sang học tiếng Nga — style
   ============================================================ */
:root{
  --pink:#ff8fb1;
  --pink-dark:#ff5c8a;
  --pink-deep:#e0446f;
  --pink-light:#ffe3ec;
  --cream:#fff7f9;
  --ink:#5c2a3d;
  --ink-soft:#9a5a72;
  --gold:#d9a55c;
  --green:#3eb489;
  --red:#e05c5c;
  --blue:#5b8def;
  --card:rgba(255,255,255,.78);
  --card-border:rgba(255,255,255,.65);
  --shadow-sm:0 2px 8px rgba(92,42,61,.08);
  --shadow-md:0 12px 32px -8px rgba(92,42,61,.16),0 2px 8px rgba(92,42,61,.05);
  --shadow-lg:0 24px 60px -12px rgba(92,42,61,.22);
  --r-lg:24px; --r-md:16px; --r-sm:10px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Be Vietnam Pro",system-ui,sans-serif;
  color:var(--ink);
  background:linear-gradient(160deg,#fff0f5 0%,#ffe9f0 40%,#fff5ea 100%);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(255,92,138,.25);color:var(--ink);}
button{-webkit-tap-highlight-color:transparent;font-family:inherit;}
:focus-visible{outline:2px solid var(--pink-dark);outline-offset:2px;border-radius:4px;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto!important;}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;}
}

/* ===== aurora backdrop ===== */
#aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
#aurora i{position:absolute;width:60vmax;height:60vmax;border-radius:50%;filter:blur(70px);opacity:.5;will-change:transform;}
#aurora i:nth-child(1){background:radial-gradient(circle at 40% 40%,rgba(255,143,177,.7),transparent 62%);top:-22%;left:-15%;animation:aurA 26s ease-in-out infinite alternate;}
#aurora i:nth-child(2){background:radial-gradient(circle at 60% 40%,rgba(255,209,150,.55),transparent 60%);bottom:-28%;right:-18%;animation:aurB 32s ease-in-out infinite alternate;}
#aurora i:nth-child(3){background:radial-gradient(circle at 50% 50%,rgba(190,140,255,.4),transparent 60%);top:32%;right:-28%;animation:aurC 38s ease-in-out infinite alternate;}
@keyframes aurA{to{transform:translate(12vw,9vh) scale(1.15);}}
@keyframes aurB{to{transform:translate(-10vw,-10vh) scale(.92);}}
@keyframes aurC{to{transform:translate(-14vw,7vh) rotate(35deg) scale(1.12);}}

/* ===== layout ===== */
#app{position:relative;z-index:1;max-width:760px;margin:0 auto;padding:20px 16px 110px;}
header.top{
  display:flex;align-items:center;gap:12px;
  padding:6px 2px 18px;
}
header.top .logo{font-size:1.9rem;line-height:1;}
header.top h1{
  font-family:"Fraunces",serif;font-size:1.25rem;font-weight:600;margin:0;letter-spacing:.01em;
}
header.top h1 small{display:block;font-family:"Be Vietnam Pro",sans-serif;font-size:.72rem;font-weight:500;color:var(--ink-soft);margin-top:2px;}
header.top .spacer{flex:1;}
.streak-pill{
  background:var(--card);border:1px solid var(--card-border);border-radius:999px;
  padding:8px 14px;font-size:.82rem;font-weight:700;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;gap:6px;white-space:nowrap;
}

/* ===== cards & general ===== */
.card{
  background:var(--card);border:1px solid var(--card-border);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  padding:22px;margin-bottom:16px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
h2.section{
  font-family:"Fraunces",serif;font-size:1.5rem;font-weight:600;margin:6px 2px 4px;
}
p.section-sub{margin:0 2px 18px;color:var(--ink-soft);font-size:.9rem;}

.view{display:none;animation:fadeUp .35s ease both;}
.view.active{display:block;}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}

/* ===== home ===== */
.hero{
  text-align:center;padding:30px 22px 26px;
  background:linear-gradient(150deg,rgba(255,255,255,.85),rgba(255,227,236,.75));
}
.hero .big{font-family:"Fraunces",serif;font-size:1.7rem;font-weight:700;margin:0 0 6px;}
.hero p{margin:0;color:var(--ink-soft);font-size:.92rem;line-height:1.55;}
.stats-row{display:flex;gap:10px;margin:16px 0;}
.stat{
  flex:1;background:var(--card);border:1px solid var(--card-border);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);padding:14px 8px;text-align:center;
}
.stat .num{font-family:"Fraunces",serif;font-size:1.5rem;font-weight:700;color:var(--pink-deep);}
.stat .lbl{font-size:.68rem;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em;margin-top:2px;}
.progress-track{height:10px;border-radius:999px;background:rgba(255,92,138,.15);overflow:hidden;margin-top:10px;}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--pink),var(--pink-dark));transition:width .6s cubic-bezier(.22,1,.36,1);}

.wod{display:flex;align-items:center;gap:16px;}
.wod .heart{font-size:2rem;}
.wod .ru{font-family:"Fraunces",serif;font-size:1.45rem;font-weight:700;}
.wod .tr{color:var(--pink-deep);font-weight:600;font-size:.9rem;}
.wod .vi{color:var(--ink-soft);font-size:.9rem;}

.menu-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.menu-card{
  border:1px solid var(--card-border);background:var(--card);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  padding:20px 16px;text-align:left;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;gap:6px;
}
.menu-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.menu-card:active{transform:scale(.97);}
.menu-card .ic{font-size:1.8rem;}
.menu-card .t{font-weight:700;font-size:.98rem;color:var(--ink);}
.menu-card .d{font-size:.76rem;color:var(--ink-soft);line-height:1.4;}

/* ===== alphabet ===== */
.alpha-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;}
.alpha-card{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);padding:14px;cursor:pointer;text-align:left;
  transition:transform .15s ease,box-shadow .15s ease;
}
.alpha-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.alpha-card .letter{font-family:"Fraunces",serif;font-size:1.7rem;font-weight:700;color:var(--pink-deep);}
.alpha-card .hint{font-size:.72rem;color:var(--ink-soft);margin-top:4px;line-height:1.4;}
.alpha-card .ex{margin-top:8px;font-size:.8rem;}
.alpha-card .ex b{color:var(--ink);}
.alpha-card .ex span{color:var(--ink-soft);}
.tips{margin-top:18px;}
.tips li{margin-bottom:10px;font-size:.88rem;line-height:1.55;color:var(--ink);}
.tips b{color:var(--pink-deep);}

/* ===== vocab topics ===== */
.topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.topic-card{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:18px 16px;cursor:pointer;text-align:left;
  transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;gap:5px;
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.topic-card .ic{font-size:1.7rem;}
.topic-card .t{font-weight:700;font-size:.94rem;}
.topic-card .d{font-size:.74rem;color:var(--ink-soft);}
.topic-card .cnt{font-size:.7rem;font-weight:700;color:var(--pink-deep);margin-top:2px;}
.topic-card .mini-track{height:6px;border-radius:999px;background:rgba(255,92,138,.14);overflow:hidden;margin-top:6px;}
.topic-card .mini-fill{height:100%;background:linear-gradient(90deg,var(--pink),var(--pink-dark));border-radius:999px;}

/* word list */
.word-row{
  display:flex;align-items:center;gap:12px;
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);padding:13px 14px;margin-bottom:10px;
}
.word-row .txt{flex:1;min-width:0;}
.word-row .ru{font-weight:700;font-size:1.02rem;}
.word-row .tr{color:var(--pink-deep);font-size:.82rem;font-weight:600;}
.word-row .vi{color:var(--ink-soft);font-size:.84rem;}
.word-row.learned{border-left:4px solid var(--green);}
.speak-btn{
  border:none;background:var(--pink-light);color:var(--pink-deep);
  width:42px;height:42px;border-radius:50%;font-size:1.1rem;cursor:pointer;flex-shrink:0;
  transition:transform .15s ease,background .15s ease;
  display:flex;align-items:center;justify-content:center;
}
.speak-btn:hover{background:var(--pink);color:#fff;}
.speak-btn:active{transform:scale(.88);}
.speak-btn.speaking{background:var(--pink-dark);color:#fff;animation:pulse 1s ease infinite;}
@keyframes pulse{50%{transform:scale(1.12);}}

.back-btn{
  border:none;background:var(--card);border:1px solid var(--card-border);
  box-shadow:var(--shadow-sm);border-radius:999px;padding:9px 18px;
  font-weight:700;font-size:.84rem;color:var(--ink);cursor:pointer;margin-bottom:16px;
  display:inline-flex;align-items:center;gap:6px;
}
.back-btn:hover{background:#fff;}

/* ===== flashcards ===== */
.deck-picker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.chip{
  border:1.5px solid rgba(255,92,138,.35);background:rgba(255,255,255,.6);
  border-radius:999px;padding:8px 15px;font-size:.8rem;font-weight:600;color:var(--ink);
  cursor:pointer;transition:all .15s ease;
}
.chip:hover{border-color:var(--pink-dark);}
.chip.active{background:var(--pink-dark);border-color:var(--pink-dark);color:#fff;box-shadow:0 4px 14px rgba(255,92,138,.4);}

.flash-stage{perspective:1200px;margin:6px 0 16px;}
.flash-card{
  position:relative;width:100%;min-height:270px;cursor:pointer;
  transform-style:preserve-3d;transition:transform .55s cubic-bezier(.34,1.3,.5,1);
}
.flash-card.flipped{transform:rotateY(180deg);}
.flash-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:var(--r-lg);border:1px solid var(--card-border);box-shadow:var(--shadow-lg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  padding:28px;text-align:center;
}
.flash-face.front{background:linear-gradient(150deg,#fff,var(--pink-light));}
.flash-face.back{background:linear-gradient(150deg,var(--pink-light),#ffe9d6);transform:rotateY(180deg);}
.flash-face .ru{font-family:"Fraunces",serif;font-size:2rem;font-weight:700;line-height:1.2;}
.flash-face .tr{color:var(--pink-deep);font-weight:700;font-size:1.05rem;}
.flash-face .vi{font-size:1.25rem;font-weight:700;color:var(--ink);}
.flash-face .tap-hint{position:absolute;bottom:14px;font-size:.72rem;color:var(--ink-soft);}
.flash-controls{display:flex;gap:12px;}
.flash-controls button{
  flex:1;border:none;border-radius:var(--r-md);padding:15px;font-size:.92rem;font-weight:700;
  cursor:pointer;transition:transform .15s ease,filter .15s ease;color:#fff;
}
.flash-controls button:active{transform:scale(.95);}
.btn-again{background:linear-gradient(135deg,#f2a154,#e07b39);}
.btn-know{background:linear-gradient(135deg,#4cc99a,var(--green));}
.flash-meta{text-align:center;font-size:.8rem;color:var(--ink-soft);margin-bottom:10px;font-weight:600;}
.deck-done{text-align:center;padding:36px 20px;}
.deck-done .emoji{font-size:3rem;}
.deck-done h3{font-family:"Fraunces",serif;font-size:1.4rem;margin:10px 0 6px;}
.deck-done p{color:var(--ink-soft);font-size:.9rem;margin:0 0 18px;}

/* ===== quiz ===== */
.quiz-q{
  text-align:center;padding:26px 20px;
}
.quiz-q .prompt-lbl{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-soft);margin-bottom:10px;}
.quiz-q .prompt{font-family:"Fraunces",serif;font-size:1.7rem;font-weight:700;line-height:1.25;}
.quiz-q .prompt-tr{color:var(--pink-deep);font-weight:600;font-size:.9rem;margin-top:6px;min-height:1.2em;}
.quiz-opts{display:grid;gap:10px;margin-top:16px;}
.quiz-opt{
  border:1.5px solid rgba(255,92,138,.25);background:rgba(255,255,255,.75);
  border-radius:var(--r-md);padding:14px 16px;font-size:.95rem;font-weight:600;color:var(--ink);
  cursor:pointer;text-align:left;transition:all .15s ease;
}
.quiz-opt:hover{border-color:var(--pink-dark);background:#fff;}
.quiz-opt.correct{background:rgba(62,180,137,.16);border-color:var(--green);color:#1e7a5a;}
.quiz-opt.wrong{background:rgba(224,92,92,.13);border-color:var(--red);color:#a33;}
.quiz-opt:disabled{cursor:default;}
.quiz-bar{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;font-weight:700;color:var(--ink-soft);margin-bottom:12px;padding:0 4px;}
.quiz-done{text-align:center;padding:36px 22px;}
.quiz-done .score{font-family:"Fraunces",serif;font-size:3rem;font-weight:700;color:var(--pink-deep);}
.quiz-done h3{font-family:"Fraunces",serif;font-size:1.35rem;margin:8px 0 4px;}
.quiz-done p{color:var(--ink-soft);margin:0 0 20px;font-size:.9rem;}

.primary-btn{
  border:none;border-radius:999px;padding:14px 30px;font-size:.95rem;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--pink),var(--pink-dark));
  box-shadow:0 8px 24px rgba(255,92,138,.4);cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease;
}
.primary-btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,92,138,.5);}
.primary-btn:active{transform:scale(.96);}

/* ===== phrases ===== */
.phrase-group h3{
  font-family:"Fraunces",serif;font-size:1.15rem;margin:22px 2px 12px;display:flex;align-items:center;gap:8px;
}

/* ===== bottom nav ===== */
nav.bottom{
  position:fixed;bottom:0;left:0;right:0;z-index:50;
  display:flex;justify-content:center;gap:2px;
  background:rgba(255,250,252,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(255,92,138,.15);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
nav.bottom button{
  flex:1;max-width:110px;border:none;background:none;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 2px;border-radius:12px;color:var(--ink-soft);
  font-size:.62rem;font-weight:700;transition:color .15s ease;
}
nav.bottom button .ic{font-size:1.25rem;transition:transform .2s ease;}
nav.bottom button.active{color:var(--pink-deep);}
nav.bottom button.active .ic{transform:translateY(-2px) scale(1.15);}

footer.love{
  text-align:center;font-size:.78rem;color:var(--ink-soft);
  padding:26px 10px 6px;line-height:1.6;
}

/* confetti */
.confetti-piece{
  position:fixed;top:-16px;z-index:999;pointer-events:none;
  width:10px;height:14px;border-radius:3px;opacity:.95;
  animation:confFall linear forwards;
}
@keyframes confFall{
  to{transform:translateY(105vh) rotate(720deg);opacity:.7;}
}

/* ===== badges ===== */
.badges{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.badge{
  display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;
  padding:10px 4px;border-radius:var(--r-md);
  background:linear-gradient(150deg,#fff,var(--pink-light));
  border:1px solid rgba(255,92,138,.25);
}
.badge .b-ic{font-size:1.5rem;}
.badge .b-name{font-size:.6rem;font-weight:700;color:var(--ink);line-height:1.25;}
.badge.locked{filter:grayscale(1);opacity:.45;background:rgba(255,255,255,.5);}

/* ===== search ===== */
.search-box{
  width:100%;border:1.5px solid rgba(255,92,138,.3);border-radius:999px;
  background:rgba(255,255,255,.8);padding:13px 20px;font-size:.95rem;font-family:inherit;
  color:var(--ink);margin-bottom:16px;outline:none;box-shadow:var(--shadow-sm);
  transition:border-color .15s ease,box-shadow .15s ease;
}
.search-box:focus{border-color:var(--pink-dark);box-shadow:0 0 0 4px rgba(255,92,138,.15);}
.search-box::placeholder{color:var(--ink-soft);opacity:.7;}

/* ===== matching game ===== */
.match-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.match-tile{
  min-height:74px;border-radius:var(--r-md);padding:10px 8px;cursor:pointer;
  font-size:.82rem;font-weight:700;line-height:1.3;color:var(--ink);
  border:1.5px solid rgba(255,92,138,.25);background:rgba(255,255,255,.8);
  box-shadow:var(--shadow-sm);transition:all .15s ease;
  display:flex;align-items:center;justify-content:center;text-align:center;
}
.match-tile.ru{font-family:"Fraunces",serif;font-size:.95rem;}
.match-tile:hover{border-color:var(--pink-dark);transform:translateY(-2px);}
.match-tile.selected{background:var(--pink-dark);border-color:var(--pink-dark);color:#fff;box-shadow:0 6px 18px rgba(255,92,138,.45);}
.match-tile.matched{
  background:rgba(62,180,137,.15);border-color:var(--green);color:#1e7a5a;
  cursor:default;transform:scale(.96);opacity:.65;
}
.match-tile.wrong{background:rgba(224,92,92,.14);border-color:var(--red);color:#a33;animation:shake .4s ease;}
@keyframes shake{
  20%,60%{transform:translateX(-5px);}
  40%,80%{transform:translateX(5px);}
}

/* ===== listening ===== */
.speak-btn.listen-big{
  width:84px;height:84px;font-size:2rem;margin:0 auto;
  background:linear-gradient(135deg,var(--pink),var(--pink-dark));color:#fff;
  box-shadow:0 10px 26px rgba(255,92,138,.45);
}
.speak-btn.listen-big:hover{filter:brightness(1.05);}

/* ===== grammar ===== */
.lesson{padding:20px;}
.lesson-title{font-family:"Fraunces",serif;font-size:1.15rem;margin:0 0 8px;}
.lesson-note{font-size:.88rem;line-height:1.6;color:var(--ink);background:rgba(255,227,236,.55);
  border-left:3px solid var(--pink);border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:10px 14px;margin:0 0 14px;}

/* ===== header toggle ===== */
.icon-toggle{
  border:1px solid var(--card-border);background:var(--card);box-shadow:var(--shadow-sm);
  width:42px;height:42px;border-radius:50%;font-size:1.1rem;cursor:pointer;flex-shrink:0;
  transition:transform .15s ease;
}
.icon-toggle:active{transform:scale(.88) rotate(-20deg);}

/* ===== goal ring & review card ===== */
.goal-card{display:flex;align-items:center;gap:16px;padding:14px 20px;}
.goal-ring{flex-shrink:0;}
.review-card{
  display:flex;align-items:center;gap:14px;width:100%;cursor:pointer;
  font-family:inherit;color:var(--ink);text-align:left;
  transition:transform .15s ease;
}
.review-card:not(:disabled):hover{transform:translateY(-2px);}
.review-card:disabled{cursor:default;opacity:.75;}
.due-pill{
  background:var(--pink-dark);color:#fff;font-weight:800;font-size:.85rem;
  min-width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(255,92,138,.4);flex-shrink:0;padding:0 8px;
}

/* ===== letters from Danya ===== */
.letters-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.letter-env{
  border:1px solid rgba(255,92,138,.25);border-radius:var(--r-md);cursor:pointer;
  background:linear-gradient(150deg,#fff,var(--pink-light));
  padding:12px 6px;display:flex;flex-direction:column;align-items:center;gap:5px;
  position:relative;transition:transform .15s ease;font-family:inherit;color:var(--ink);
}
.letter-env:hover{transform:translateY(-2px);}
.letter-env.locked{filter:grayscale(.8);opacity:.55;}
.letter-env .env-ic{font-size:1.6rem;}
.letter-env .env-t{font-size:.62rem;font-weight:700;text-align:center;line-height:1.3;}
.new-dot{
  position:absolute;top:-6px;right:-4px;background:var(--pink-dark);color:#fff;
  font-size:.55rem;font-weight:800;padding:3px 7px;border-radius:999px;
  box-shadow:0 3px 8px rgba(255,92,138,.5);animation:newPulse 1.4s ease infinite;
}
@keyframes newPulse{50%{transform:scale(1.15);}}

/* ===== modal ===== */
#modal[hidden]{display:none!important;}
#toast[hidden]{display:none!important;}
#modal{
  position:fixed;inset:0;z-index:200;background:rgba(60,20,35,.45);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
#modal-card{
  background:var(--cream);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);
  max-width:480px;width:100%;max-height:82vh;overflow-y:auto;
  animation:modalIn .3s cubic-bezier(.34,1.4,.5,1) both;
}
@keyframes modalIn{from{opacity:0;transform:translateY(24px) scale(.95);}to{opacity:1;transform:none;}}
.letter-modal{padding:30px 26px;text-align:center;}
.letter-modal.onboard{padding:20px 22px;}
.letter-modal .letter-head{font-size:2.6rem;}
.letter-modal h3{font-family:"Fraunces",serif;font-size:1.3rem;margin:8px 0 14px;color:var(--ink);}
.letter-modal .letter-ru{
  font-family:"Fraunces",serif;font-size:1rem;line-height:1.7;color:var(--ink);
  text-align:left;font-style:italic;margin:0;
}
.letter-hr{border:none;border-top:1.5px dashed rgba(255,92,138,.4);margin:16px 0;}
.letter-modal .letter-vi{font-size:.9rem;line-height:1.7;color:var(--ink-soft);text-align:left;margin:0 0 20px;}

/* ===== toast ===== */
#toast{
  position:fixed;bottom:96px;left:50%;transform:translateX(-50%) translateY(10px);
  background:var(--ink);color:#fff;font-size:.85rem;font-weight:600;
  padding:12px 22px;border-radius:999px;box-shadow:var(--shadow-lg);
  z-index:300;opacity:0;transition:opacity .3s ease,transform .3s ease;
  max-width:88vw;text-align:center;
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===== heatmap ===== */
.heatmap{
  display:grid;grid-template-rows:repeat(7,1fr);grid-auto-flow:column;
  gap:3px;justify-content:start;
}
.heatmap i{
  width:14px;height:14px;border-radius:4px;background:rgba(255,92,138,.1);
}
.heatmap .h1{background:rgba(255,92,138,.32);}
.heatmap .h2{background:rgba(255,92,138,.55);}
.heatmap .h3{background:rgba(255,92,138,.78);}
.heatmap .h4{background:var(--pink-deep);}

/* ===== spelling game ===== */
.spell-slots{display:flex;justify-content:center;gap:7px;margin-top:18px;flex-wrap:wrap;}
.spell-slot{
  width:38px;height:46px;border-radius:10px;border-bottom:3px solid rgba(255,92,138,.4);
  background:rgba(255,92,138,.08);display:flex;align-items:center;justify-content:center;
  font-family:"Fraunces",serif;font-size:1.35rem;font-weight:700;color:var(--pink-deep);
}
.spell-slot.filled{background:rgba(62,180,137,.14);border-color:var(--green);color:#1e7a5a;animation:slotPop .25s ease;}
@keyframes slotPop{from{transform:scale(.7);}to{transform:none;}}
.spell-pool{display:flex;justify-content:center;gap:9px;margin-top:20px;flex-wrap:wrap;}
.spell-key{
  width:46px;height:52px;border-radius:12px;cursor:pointer;
  border:1.5px solid rgba(255,92,138,.3);background:rgba(255,255,255,.85);
  font-family:"Fraunces",serif;font-size:1.4rem;font-weight:700;color:var(--ink);
  box-shadow:var(--shadow-sm);transition:all .13s ease;
}
.spell-key:not(.used):hover{border-color:var(--pink-dark);transform:translateY(-2px);}
.spell-key:not(.used):active{transform:scale(.9);}
.spell-key.used{opacity:.25;cursor:default;}
.spell-key.shake-wrong{animation:shake .35s ease;background:rgba(224,92,92,.15);border-color:var(--red);}

/* ===== heart confetti ===== */
.confetti-piece.heart{
  background:none!important;width:auto;height:auto;font-size:16px;line-height:1;
  border-radius:0;
}

/* ============================================================
   MASCOT — Gấu Misa 🐻
   ============================================================ */
.msct *{transform-box:fill-box;}
.msct .m-eyes-happy,.msct .m-eyes-closed,.msct .m-mouth-big,.msct .m-mouth-sad,
.msct .m-zzz,.msct .m-spark,.msct .m-heart,.msct .m-q{display:none;}

/* idle: thở nhè nhẹ + chớp mắt */
.msct .m-bob{animation:mBob 3.2s ease-in-out infinite;transform-origin:50% 100%;}
@keyframes mBob{0%,100%{transform:translateY(0) scaleY(1);}50%{transform:translateY(-3px) scaleY(1.015);}}
.msct .m-eye{animation:mBlink 4.6s ease-in-out infinite;transform-origin:center;}
@keyframes mBlink{0%,94%,100%{transform:scaleY(1);}96%,98%{transform:scaleY(.08);}}

/* wave: vẫy tay trái (origin = vai, tức mép trên của lap) */
.msct.wave .m-arm-l{animation:mWave 1.5s ease-in-out infinite;transform-origin:60% 14%;}
@keyframes mWave{0%,100%{transform:rotate(0deg);}30%{transform:rotate(-38deg);}50%{transform:rotate(-20deg);}70%{transform:rotate(-38deg);}}

/* happy: nhảy múa, mắt ^^, miệng cười to, tay giơ, lấp lánh */
.msct.happy .m-eyes-open,.msct.happy .m-mouth-smile{display:none;}
.msct.happy .m-eyes-happy,.msct.happy .m-mouth-big,.msct.happy .m-spark{display:block;}
.msct.happy .m-bob{animation:mJump .65s cubic-bezier(.36,0,.64,1) infinite;}
@keyframes mJump{0%,100%{transform:translateY(0) scaleY(1) scaleX(1);}30%{transform:translateY(-14px) scaleY(1.06) scaleX(.97);}60%{transform:translateY(0) scaleY(.94) scaleX(1.05);}}
.msct.happy .m-arm-l{animation:mArmUpL .65s ease-in-out infinite;transform-origin:60% 14%;}
.msct.happy .m-arm-r{animation:mArmUpR .65s ease-in-out infinite;transform-origin:40% 14%;}
@keyframes mArmUpL{0%,100%{transform:rotate(-70deg);}50%{transform:rotate(-95deg);}}
@keyframes mArmUpR{0%,100%{transform:rotate(70deg);}50%{transform:rotate(95deg);}}
.msct.happy .m-spark circle{animation:mTwinkle 1s ease-in-out infinite;}
.msct.happy .m-spark circle:nth-child(2){animation-delay:.25s;}
.msct.happy .m-spark circle:nth-child(3){animation-delay:.5s;}
.msct.happy .m-spark circle:nth-child(4){animation-delay:.75s;}
@keyframes mTwinkle{0%,100%{opacity:.2;transform:scale(.6);}50%{opacity:1;transform:scale(1.3);}}

/* sad: tai cụp, miệng mếu, lắc lư chậm */
.msct.sad .m-mouth-smile{display:none;}
.msct.sad .m-mouth-sad{display:block;}
.msct.sad .m-ear-l{transform:rotate(-14deg) translateY(4px);}
.msct.sad .m-ear-r{transform:rotate(14deg) translateY(4px);}
.msct.sad .m-head{animation:mSway 3s ease-in-out infinite;transform-origin:50% 85%;}
@keyframes mSway{0%,100%{transform:rotate(-2.5deg);}50%{transform:rotate(2.5deg);}}
.msct.sad .m-eye{animation:none;transform:scaleY(.75);}

/* sleep: mắt nhắm, Zzz bay */
.msct.sleep .m-eyes-open,.msct.sleep .m-mouth-smile{display:none;}
.msct.sleep .m-eyes-closed,.msct.sleep .m-zzz{display:block;}
.msct.sleep .m-bob{animation:mBob 4.5s ease-in-out infinite;}
.msct.sleep .m-zzz text{animation:mZzz 2.6s ease-in-out infinite;}
.msct.sleep .m-zzz text:nth-child(2){animation-delay:.4s;}
.msct.sleep .m-zzz text:nth-child(3){animation-delay:.8s;}
@keyframes mZzz{0%{opacity:0;transform:translate(0,6px);}40%{opacity:1;}100%{opacity:0;transform:translate(6px,-10px);}}

/* gift: ôm trái tim đập */
.msct.gift .m-eyes-open{display:none;}
.msct.gift .m-eyes-happy,.msct.gift .m-heart{display:block;}
.msct.gift .m-heart{animation:mPulse 1s ease-in-out infinite;transform-origin:center;}
@keyframes mPulse{0%,100%{transform:scale(1);}50%{transform:scale(1.18);}}
.msct.gift .m-arm-l{transform:rotate(-32deg);transform-origin:60% 14%;}
.msct.gift .m-arm-r{transform:rotate(32deg);transform-origin:40% 14%;}

/* think: dấu hỏi nhấp nháy, nghiêng đầu */
.msct.think .m-q{display:block;animation:mQ 1.6s ease-in-out infinite;}
@keyframes mQ{0%,100%{opacity:.3;}50%{opacity:1;}}
.msct.think .m-head{transform:rotate(-5deg);transform-origin:50% 80%;}

/* hero với Misa */
.hero-misa{display:flex;align-items:center;gap:6px;text-align:left;padding:20px 18px;}
.misa-holder{background:none;border:none;cursor:pointer;padding:0;flex-shrink:0;}
.misa-holder:active .msct .m-bob{animation:mJump .65s infinite;}
.hero-right{flex:1;min-width:0;}
.hero-misa .big{margin:0 0 8px;}
.speech{
  position:relative;background:rgba(255,255,255,.85);border:1.5px solid rgba(255,92,138,.3);
  border-radius:16px;padding:11px 14px;font-size:.82rem;line-height:1.5;color:var(--ink);
  box-shadow:var(--shadow-sm);
}
.speech::before{
  content:"";position:absolute;left:-8px;top:20px;width:14px;height:14px;
  background:inherit;border-left:1.5px solid rgba(255,92,138,.3);border-bottom:1.5px solid rgba(255,92,138,.3);
  transform:rotate(45deg);border-radius:0 0 0 4px;
}
.speech.pop{animation:speechPop .3s ease;}
@keyframes speechPop{0%{transform:scale(.92);}60%{transform:scale(1.03);}100%{transform:scale(1);}}

/* ===== level & gift & layout ===== */
.level-card{display:flex;align-items:center;gap:14px;padding:14px 18px;}
.lvl-ic{font-size:2rem;flex-shrink:0;}
.lvl-badge{
  display:inline-block;background:linear-gradient(135deg,var(--pink),var(--pink-dark));color:#fff;
  font-weight:800;font-size:1rem;padding:10px 22px;border-radius:999px;margin:10px 0 14px;
  box-shadow:0 8px 24px rgba(255,92,138,.4);
}
.levelup h3{font-size:1.6rem;}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;}
.gift-card{
  display:flex;align-items:center;gap:10px;cursor:pointer;font-family:inherit;color:var(--ink);
  border:1px solid var(--card-border);transition:transform .15s ease;
}
.gift-card:hover{transform:translateY(-2px);}
.gift-card:not(.opened) .gift-ic{animation:giftShake 2.2s ease-in-out infinite;display:inline-block;font-size:1.9rem;}
.gift-card.opened .gift-ic{font-size:1.9rem;filter:grayscale(.5);opacity:.7;}
@keyframes giftShake{0%,86%,100%{transform:rotate(0);}88%{transform:rotate(-12deg) scale(1.1);}92%{transform:rotate(10deg) scale(1.1);}96%{transform:rotate(-6deg);}}
.gift-word{
  background:rgba(255,227,236,.6);border-radius:var(--r-md);padding:16px;text-align:center;
}
.gift-word .gw-ru{font-family:"Fraunces",serif;font-size:1.5rem;font-weight:700;color:var(--ink);}
.gift-word .gw-tr{color:var(--pink-deep);font-weight:700;font-size:.9rem;margin-top:2px;}
.gift-word .gw-vi{color:var(--ink-soft);font-size:.9rem;margin-top:4px;}

/* ===== combo & xp ===== */
.combo-tag{transition:transform .15s ease;}
.combo-tag.hot{color:#e07b39;}
.combo-tag.pop{animation:comboPop .35s ease;}
@keyframes comboPop{0%{transform:scale(1);}50%{transform:scale(1.35) rotate(-4deg);}100%{transform:scale(1);}}
.combo-final{
  display:inline-block;background:rgba(240,161,84,.18);color:#c25e14;font-weight:800;
  font-size:.85rem;padding:6px 14px;border-radius:999px;margin-bottom:8px;
}
.xp-float{
  position:fixed;bottom:110px;left:50%;transform:translateX(-50%);z-index:150;
  background:linear-gradient(135deg,var(--pink),var(--pink-dark));color:#fff;
  font-weight:800;font-size:.85rem;padding:7px 16px;border-radius:999px;
  box-shadow:0 8px 20px rgba(255,92,138,.45);pointer-events:none;
  animation:xpUp 1.4s ease-out forwards;
}
@keyframes xpUp{0%{opacity:0;transform:translateX(-50%) translateY(12px) scale(.8);}15%{opacity:1;transform:translateX(-50%) translateY(0) scale(1.05);}30%{transform:translateX(-50%) scale(1);}100%{opacity:0;transform:translateX(-50%) translateY(-46px) scale(.9);}}

/* shimmer on progress */
.progress-fill.shimmer{position:relative;overflow:hidden;}
.progress-fill.shimmer::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);
  animation:shimmer 2.4s ease-in-out infinite;
}
@keyframes shimmer{0%{transform:translateX(-100%);}60%,100%{transform:translateX(100%);}}

/* stagger entrance for cards in views */
.view.active > .card,.view.active .menu-card,.view.active .topic-card{animation:fadeUp .4s ease both;}
.view.active > .card:nth-child(2){animation-delay:.04s;}
.view.active > .card:nth-child(3){animation-delay:.08s;}
.view.active > .card:nth-child(4){animation-delay:.12s;}
.view.active > .card:nth-child(5){animation-delay:.16s;}

/* ============================================================
   NIGHT MODE 🌙
   ============================================================ */
body.night{
  background:linear-gradient(160deg,#231018 0%,#2a1220 45%,#241522 100%);
  --cream:#2e1722;
  --ink:#f6dfe9;
  --ink-soft:#c497ab;
  --pink-light:#472233;
  --card:rgba(58,30,44,.78);
  --card-border:rgba(255,143,177,.14);
  --shadow-sm:0 2px 8px rgba(0,0,0,.25);
  --shadow-md:0 12px 32px -8px rgba(0,0,0,.4),0 2px 8px rgba(0,0,0,.2);
  --shadow-lg:0 24px 60px -12px rgba(0,0,0,.5);
}
body.night #aurora i{opacity:.22;}
body.night .hero{background:linear-gradient(150deg,rgba(58,30,44,.9),rgba(71,34,51,.8));}
body.night nav.bottom{background:rgba(35,16,24,.92);border-top-color:rgba(255,143,177,.12);}
body.night .quiz-opt,body.night .match-tile,body.night .search-box,body.night .spell-key,body.night .chip{
  background:rgba(58,30,44,.85);color:var(--ink);
}
body.night .chip.active{background:var(--pink-dark);color:#fff;}
body.night .quiz-opt.correct{background:rgba(62,180,137,.22);color:#8fe6c4;}
body.night .quiz-opt.wrong{background:rgba(224,92,92,.22);color:#ffb3b3;}
body.night .match-tile.matched{background:rgba(62,180,137,.2);color:#8fe6c4;}
body.night .match-tile.selected{background:var(--pink-dark);color:#fff;}
body.night .flash-face.front{background:linear-gradient(150deg,#3a1e2c,#472233);}
body.night .flash-face.back{background:linear-gradient(150deg,#472233,#4a2a26);}
body.night .letter-env{background:linear-gradient(150deg,#3a1e2c,#472233);}
body.night .badge{background:linear-gradient(150deg,#3a1e2c,#472233);}
body.night .badge.locked{background:rgba(46,23,34,.6);}
body.night .lesson-note{background:rgba(255,143,177,.1);}
body.night .heatmap i{background:rgba(255,143,177,.08);}
body.night .heatmap .h1{background:rgba(255,92,138,.3);}
body.night .heatmap .h2{background:rgba(255,92,138,.5);}
body.night .heatmap .h3{background:rgba(255,92,138,.75);}
body.night .heatmap .h4{background:var(--pink);}
body.night .spell-slot.filled{color:#8fe6c4;}
body.night #modal-card{background:#2e1722;}
body.night #toast{background:#f6dfe9;color:#3a1e2c;}
body.night .word-row .ru,body.night .prompt,body.night .flash-face .vi{color:var(--ink);}
body.night .speech{background:rgba(58,30,44,.9);}
body.night .gift-word{background:rgba(255,143,177,.12);}
body.night .combo-final{background:rgba(240,161,84,.22);color:#f2b380;}
body.night .msct .m-shadow{fill:rgba(0,0,0,.3);}

/* ============================================================
   FRESH STUDIO — editorial redesign
   ============================================================ */
:root{
  color-scheme:light;
  --pink:#ee8063;
  --pink-dark:#d75d43;
  --pink-deep:#155c4b;
  --pink-light:#e5f0e8;
  --cream:#fffdf8;
  --ink:#1b2a26;
  --ink-soft:#68756e;
  --gold:#c58a3d;
  --green:#21856c;
  --red:#c74d4d;
  --blue:#5576ad;
  --card:#fffefa;
  --card-border:#e7e4da;
  --shadow-sm:0 2px 8px rgba(28,43,36,.045);
  --shadow-md:0 8px 24px rgba(28,43,36,.075);
  --shadow-lg:0 18px 44px rgba(28,43,36,.13);
  --r-lg:20px; --r-md:14px; --r-sm:9px;
}
*{box-sizing:border-box;}
body{
  color:var(--ink);
  background:#f5f4ee;
  background-image:radial-gradient(#d5d7ca 0.65px,transparent 0.65px);
  background-size:22px 22px;
}
#aurora{display:none;}
#app{max-width:1000px;padding:0 24px 132px;}
header.top{
  position:sticky;top:0;z-index:60;
  margin:0 -24px 26px;padding:16px 24px;
  background:rgba(245,244,238,.94);
  border-bottom:1px solid rgba(27,42,38,.09);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
header.top .logo{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:#e5f0e8;font-size:1.42rem;}
header.top h1{font-family:"Be Vietnam Pro",system-ui,sans-serif;font-size:1.08rem;font-weight:800;letter-spacing:-.035em;line-height:1.2;}
header.top h1 small{margin-top:4px;font-size:.68rem;color:#748078;letter-spacing:0;font-weight:500;}
.icon-toggle{border:1px solid #e1dfd5;background:#fffefa;box-shadow:none;width:40px;height:40px;border-radius:13px;font-size:1rem;}
.icon-toggle:hover{border-color:#c6d4c9;background:#eaf2eb;}
.card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);padding:22px;margin-bottom:14px;backdrop-filter:none;-webkit-backdrop-filter:none;}
h2.section{font-family:"Fraunces",Georgia,serif;font-size:1.8rem;letter-spacing:-.035em;margin:10px 2px 5px;color:#183c31;}
p.section-sub{font-size:.84rem;line-height:1.55;color:var(--ink-soft);margin-bottom:20px;}
.view{animation:fadeUp .22s ease both;}
.hero{
  position:relative;overflow:hidden;text-align:left;padding:22px 26px;
  background:#e8efe5;border-color:#d8e3d8;
}
.hero::after{content:"";position:absolute;width:270px;height:270px;right:-85px;top:-155px;border-radius:50%;background:rgba(255,255,255,.4);pointer-events:none;}
.hero-misa{min-height:202px;gap:14px;}
.hero-misa .misa-holder{z-index:1;}
.hero-misa .msct{width:168px;height:168px;}
.hero-right{z-index:1;}
.hero .big{font-family:"Fraunces",Georgia,serif;font-size:2rem;line-height:1.08;letter-spacing:-.035em;color:#173d31;margin:0 0 12px;}
.speech{max-width:430px;background:rgba(255,255,255,.72);border:1px solid rgba(38,91,70,.13);border-radius:13px;padding:11px 14px;color:#37564a;box-shadow:none;font-size:.8rem;}
.speech::before{background:#f4f7f0;border-color:rgba(38,91,70,.13);}
.level-card{background:#fffefa;}
.lvl-ic{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:#f6ead3;font-size:1.7rem;}
.progress-track{height:8px;background:#e7ece5;}
.progress-fill{background:linear-gradient(90deg,#529777,#155c4b);}
.progress-fill.shimmer::after{animation:none;background:transparent;}
.two-col{gap:12px;}
.goal-card,.gift-card{border:1px solid var(--card-border);background:#fffefa;}
.gift-card{position:relative;overflow:hidden;}
.gift-card:not(.opened){background:#fbf0dd;border-color:#f0dfbe;}
.gift-card:not(.opened) .gift-ic{animation:none;}
.stats-row{gap:12px;margin:14px 0;}
.stat{background:#fffefa;border:1px solid var(--card-border);border-radius:16px;box-shadow:none;padding:16px 10px;}
.stat .num{font-family:"Be Vietnam Pro",system-ui,sans-serif;font-size:1.4rem;font-weight:800;color:#155c4b;letter-spacing:-.04em;}
.stat .lbl{font-size:.62rem;letter-spacing:.045em;color:#79847d;}
.review-card{border-color:#c9ded0;background:#eaf2eb;}
.review-card:disabled{background:#f3f3ee;border-color:#e7e4da;}
.due-pill{background:#155c4b;box-shadow:none;}
.wod{background:#fffefa;}
.wod .heart{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:#f8e8df;font-size:1.5rem;}
.wod .ru{font-family:"Fraunces",Georgia,serif;font-size:1.55rem;color:#183c31;letter-spacing:-.025em;}
.menu-grid{gap:12px;}
.menu-card,.topic-card,.alpha-card{
  background:#fffefa;border:1px solid var(--card-border);border-radius:16px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.menu-card{min-height:145px;padding:18px;}
.menu-card:hover,.topic-card:hover,.alpha-card:hover{transform:translateY(-2px);border-color:#b9d0c0;box-shadow:var(--shadow-md);}
.menu-card .ic{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:#edf3ec;font-size:1.45rem;}
.menu-card .t,.topic-card .t{font-weight:750;color:#20362e;letter-spacing:-.015em;}
.menu-card .d,.topic-card .d{color:#738078;line-height:1.5;}
.topic-grid{gap:12px;}
.topic-card{padding:17px;}
.topic-card .ic{font-size:1.45rem;}
.topic-card .cnt{color:#17614f;}
.topic-card .mini-track{background:#e8eee7;}
.topic-card .mini-fill{background:#398467;}
.word-row{background:#fffefa;border-color:#e8e5dc;box-shadow:none;padding:14px;margin-bottom:9px;}
.word-row.learned{border-left:3px solid #398467;}
.word-row .ru{font-size:1.05rem;color:#1a3029;}
.word-row .tr{color:#537565;}
.speak-btn{background:#eaf2eb;color:#1a6a54;border-radius:13px;width:40px;height:40px;}
.speak-btn:hover{background:#d4e7d8;color:#155c4b;}
.back-btn{background:#fffefa;border-color:#e3e1d7;box-shadow:none;border-radius:11px;padding:10px 14px;color:#284238;}
.chip{border:1px solid #d9e2d9;background:#fffefa;color:#405d50;border-radius:10px;padding:8px 12px;}
.chip:hover{border-color:#7ca790;}
.chip.active{background:#155c4b;border-color:#155c4b;color:#fff;box-shadow:none;}
.flash-card{min-height:300px;}
.flash-face{border:1px solid #dfe5dc;border-radius:20px;box-shadow:var(--shadow-md);}
.flash-face.front{background:#e9f1e7;}
.flash-face.back{background:#f7ecdc;}
.flash-face .ru{font-family:"Fraunces",Georgia,serif;color:#1b4538;}
.flash-controls button{border-radius:12px;}
.btn-again{background:#c77e48;}
.btn-know{background:#26775f;}
.quiz-opt,.match-tile,.spell-key,.search-box{background:#fffefa;border:1px solid #e1e4da;box-shadow:none;color:#24372f;border-radius:12px;}
.quiz-opt:hover,.match-tile:hover,.spell-key:not(.used):hover{border-color:#71a087;background:#f4f8f2;}
.quiz-opt.correct{background:#e4f2e8;border-color:#3c9870;color:#185c43;}
.quiz-opt.wrong{background:#fae7e4;border-color:#d87967;color:#8f392f;}
.match-tile.selected{background:#155c4b;border-color:#155c4b;color:#fff;box-shadow:none;}
.match-tile.matched{background:#e2f0e7;border-color:#78ad8b;color:#1e634a;}
.spell-key{border-radius:12px;font-family:"Fraunces",Georgia,serif;}
.spell-slot{background:#f0f1e9;border-color:#c7d4c8;color:#155c4b;}
.spell-slot.filled{background:#e4f2e8;border-color:#3d9872;color:#185c43;}
.search-box{border-radius:12px;padding:13px 15px;}
.search-box:focus{border-color:#43866d;box-shadow:0 0 0 3px rgba(44,125,96,.12);}
.primary-btn{background:#155c4b;box-shadow:0 5px 14px rgba(21,92,75,.2);border-radius:12px;}
.primary-btn:hover{background:#0f4b3d;box-shadow:0 8px 18px rgba(21,92,75,.24);}
.quiz-done .score{color:#155c4b;}
.phrase-group h3,.lesson-title{font-family:"Fraunces",Georgia,serif;color:#1b4538;}
.lesson-note{background:#edf3ec;border-left-color:#43866d;color:#385247;}
.badges{gap:8px;}
.badge{background:#f7f4e9;border:1px solid #e9e2cc;border-radius:13px;}
.badge .b-name{color:#415246;}
.badge.locked{background:#f3f2ed;}
.letters-row{gap:9px;}
.letter-env{background:#fbf3e4;border:1px solid #ecdfc3;color:#4d4538;border-radius:13px;}
.letter-env.locked{background:#f2f1ed;}
.new-dot{background:#d75d43;box-shadow:none;animation:none;}
.gift-word{background:#f8eee0;}
.gift-word .gw-ru{font-family:"Fraunces",Georgia,serif;color:#173d31;}
.lvl-badge{background:#155c4b;box-shadow:none;border-radius:12px;}
nav.bottom{
  left:50%;bottom:calc(12px + env(safe-area-inset-bottom));right:auto;transform:translateX(-50%);
  width:min(720px,calc(100% - 28px));justify-content:space-around;gap:4px;
  background:rgba(255,254,250,.96);border:1px solid #e4e3d9;border-radius:19px;
  box-shadow:0 12px 34px rgba(27,42,38,.16);padding:7px 9px;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
nav.bottom button{max-width:112px;gap:2px;padding:6px 4px;border-radius:12px;color:#77827b;font-size:.64rem;}
nav.bottom button .ic{font-size:1.18rem;}
nav.bottom button.active{background:#e9f1e7;color:#155c4b;}
nav.bottom button.active .ic{transform:translateY(-1px);}
footer.love{color:#7b857e;}
#modal{background:rgba(24,39,32,.48);backdrop-filter:blur(5px);}
#modal-card{background:#fffdf8;border:1px solid rgba(255,255,255,.65);border-radius:20px;}
.letter-modal h3{font-family:"Fraunces",Georgia,serif;color:#183c31;}
#toast{background:#183c31;border-radius:12px;}
.heatmap i{border-radius:3px;background:#e7e9df;}
.heatmap .h1{background:#c7ddc9;}
.heatmap .h2{background:#8fbd9a;}
.heatmap .h3{background:#4f9675;}
.heatmap .h4{background:#155c4b;}

body.night{
  color-scheme:dark;
  --cream:#202b27;--ink:#edf2ec;--ink-soft:#a8b6aa;
  --pink:#ee8b70;--pink-dark:#e8795b;--pink-deep:#91c5a5;--pink-light:#2a4036;
  --card:#25322c;--card-border:#38483e;
  --shadow-sm:0 2px 8px rgba(0,0,0,.16);--shadow-md:0 8px 24px rgba(0,0,0,.2);--shadow-lg:0 18px 44px rgba(0,0,0,.28);
  background:#19231f;background-image:radial-gradient(#2c3932 0.65px,transparent 0.65px);background-size:22px 22px;
}
body.night header.top{background:rgba(25,35,31,.94);border-bottom-color:#344239;}
body.night header.top .logo,body.night .menu-card .ic{background:#2d4337;}
body.night header.top h1 small,body.night .menu-card .d,body.night .topic-card .d{color:#a8b6aa;}
body.night .icon-toggle,body.night .card,body.night .stat,body.night .menu-card,body.night .topic-card,body.night .alpha-card,body.night .word-row,body.night .goal-card,body.night .gift-card,body.night .back-btn{background:#25322c;border-color:#38483e;color:#edf2ec;}
body.night h2.section,body.night .hero .big,body.night .wod .ru,body.night .phrase-group h3,body.night .lesson-title,body.night .menu-card .t,body.night .topic-card .t{color:#e1eee3;}
body.night .hero{background:#263c32;border-color:#3b5546;}
body.night .speech{background:rgba(25,42,34,.8);border-color:#46604e;color:#d3e4d5;}
body.night .speech::before{background:#263c32;border-color:#46604e;}
body.night .stat .num,body.night .topic-card .cnt,body.night .word-row .ru{color:#a6d3b1;}
body.night .review-card{background:#294235;border-color:#45654f;}
body.night .review-card:disabled{background:#25322c;border-color:#38483e;}
body.night .speak-btn,body.night .chip,body.night .quiz-opt,body.night .match-tile,body.night .spell-key,body.night .search-box{background:#2c3b33;border-color:#405347;color:#e4eee5;}
body.night .chip.active,body.night .match-tile.selected{background:#28745b;border-color:#28745b;color:#fff;}
body.night .quiz-opt.correct,body.night .match-tile.matched,body.night .spell-slot.filled{background:#284a39;border-color:#4e8967;color:#b9e2c4;}
body.night .quiz-opt.wrong{background:#4a302d;border-color:#87544b;color:#ffc4b8;}
body.night .flash-face.front{background:#2a4036;border-color:#405347;}
body.night .flash-face.back,body.night .letter-env,body.night .badge,body.night .gift-word{background:#3d382d;border-color:#59513e;color:#edf2ec;}
body.night .lesson-note{background:#2b4035;color:#d3e4d5;}
body.night nav.bottom{background:rgba(32,43,37,.97);border-color:#435248;}
body.night nav.bottom button.active{background:#2d4939;color:#b7dfc1;}
body.night #modal-card{background:#202b27;border-color:#405047;}
body.night .letter-modal h3{color:#e1eee3;}
body.night #toast{background:#e5eee4;color:#193329;}
body.night .heatmap i{background:#2c3932;}
body.night .heatmap .h1{background:#385b43;}
body.night .heatmap .h2{background:#4e805c;}
body.night .heatmap .h3{background:#6ea27b;}
body.night .heatmap .h4{background:#91c5a5;}
body.night .wod .heart{background:#49342f;}

@media(min-width:900px){
  #view-home{display:none;}
  #view-home.active{display:grid;grid-template-columns:1.05fr .95fr;gap:0 16px;align-items:start;}
  #view-home > .hero,#view-home > .level-card,#view-home > .two-col,#view-home > .stats-row,#view-home > .review-card,#view-home > .menu-grid,#view-home > footer{grid-column:1/-1;}
  #view-home > .wod,#view-home > .card:has(.letters-row),#view-home > .card:has(.badges),#view-home > .card:has(.heatmap){height:100%;}
  #view-home > .card:has(.letters-row){grid-column:2;grid-row:6;}
  #view-home > .wod{grid-column:1;grid-row:6;}
  #view-home > .card:has(.badges){grid-column:1;grid-row:7;}
  #view-home > .card:has(.heatmap){grid-column:2;grid-row:7;}
  .hero-misa{padding:24px 34px;}
  .hero-misa .msct{width:184px;height:184px;}
}
@media(max-width:600px){
  #app{padding:0 14px 116px;}
  header.top{margin:0 -14px 18px;padding:12px 14px;gap:9px;}
  header.top .logo{width:38px;height:38px;border-radius:12px;font-size:1.2rem;}
  header.top h1{font-size:.91rem;}
  header.top h1 small{font-size:.59rem;}
  .icon-toggle{width:36px;height:36px;border-radius:11px;font-size:.9rem;}
  .card{padding:17px;margin-bottom:11px;border-radius:17px;}
  .hero-misa{padding:15px 14px;gap:3px;min-height:155px;}
  .hero-misa .msct{width:112px;height:112px;}
  .hero .big{font-size:1.5rem;}
  .speech{font-size:.7rem;padding:9px 10px;}
  .two-col{gap:9px;margin-bottom:11px;}
  .goal-card{gap:9px;padding:12px!important;}
  .goal-ring{width:54px;height:54px;}
  .gift-card{gap:7px;padding:12px!important;}
  .gift-card .gift-ic{font-size:1.45rem!important;}
  .stats-row{gap:7px;margin:10px 0;}
  .stat{padding:12px 5px;}
  .stat .num{font-size:1.15rem;}
  .stat .lbl{font-size:.55rem;}
  .menu-grid,.topic-grid{gap:9px;}
  .menu-card{min-height:132px;padding:14px 12px;}
  .menu-card .ic{width:36px;height:36px;font-size:1.25rem;}
  .menu-card .t{font-size:.88rem;}
  .menu-card .d{font-size:.68rem;}
  .badges{grid-template-columns:repeat(4,1fr);}
  .badge{padding:8px 3px;}
  .letters-row{grid-template-columns:repeat(2,1fr);}
  nav.bottom{width:calc(100% - 20px);bottom:calc(8px + env(safe-area-inset-bottom));border-radius:16px;padding:5px;}
  nav.bottom button{font-size:.57rem;padding:5px 2px;}
  nav.bottom button .ic{font-size:1.05rem;}
  .match-grid{gap:7px;}
  .match-tile{min-height:62px;padding:8px 5px;font-size:.7rem;}
  .match-tile.ru{font-size:.8rem;}
}
@media(max-width:360px){
  .hero-misa .msct{width:96px;height:96px;}
  .hero .big{font-size:1.32rem;}
  header.top h1 small{max-width:145px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .two-col{grid-template-columns:1fr;}
}

@media (max-width:420px){
  .badges{grid-template-columns:repeat(4,1fr);}
  .match-tile{font-size:.74rem;min-height:64px;}
  .match-tile.ru{font-size:.85rem;}
  .letters-row{grid-template-columns:repeat(2,1fr);}
  .spell-key{width:42px;height:48px;}
  .spell-slot{width:34px;height:42px;}
  .hero-misa .msct{width:112px;height:112px;}
  .speech{font-size:.76rem;padding:9px 12px;}
  .menu-grid,.topic-grid{grid-template-columns:1fr 1fr;}
  .alpha-grid{grid-template-columns:repeat(2,1fr);}
  .hero .big{font-size:1.45rem;}
}

/* ===== HOME REDESIGN: editorial learning studio ===== */
body{background:#f3f3ef;background-image:none;color:#172334;}
#app{max-width:1180px;padding-left:30px;padding-right:30px;}
header.top{margin-left:-30px;margin-right:-30px;padding:13px 30px;background:rgba(243,243,239,.94);border-bottom-color:#dedfd9;}
header.top .logo{background:#d9f36a;border-radius:13px;color:#172334;}
header.top h1{font-size:1rem;letter-spacing:-.045em;}
header.top h1 small{color:#818780;}
.icon-toggle{border-color:#dedfd9;background:#fff;border-radius:12px;}
.home-dashboard{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(330px,.88fr);gap:28px;align-items:start;}
.home-primary,.home-side{min-width:0;}
#view-home.active{display:block;}
.home-primary .card,.home-side .card{margin-bottom:14px;border-radius:18px;}
.hero-misa{min-height:245px;padding:26px 26px 26px 30px;gap:8px;background:#172334;border:0;border-radius:23px;box-shadow:0 18px 36px rgba(23,35,52,.14);}
.hero-misa::after{width:340px;height:340px;top:auto;bottom:-250px;right:-65px;background:#263953;}
.hero-misa::before{content:"";position:absolute;width:170px;height:170px;right:100px;top:-125px;border:1px solid rgba(216,243,106,.22);border-radius:50%;}
.hero-misa .misa-holder{order:2;margin-left:auto;align-self:flex-end;}
.hero-misa .msct{width:168px;height:168px;filter:drop-shadow(0 12px 18px rgba(0,0,0,.16));}
.hero-right{order:1;max-width:410px;}
.hero-kicker,.side-kicker{font-size:.63rem;font-weight:800;letter-spacing:.16em;color:#c6df61;margin-bottom:13px;}
.hero .big{font-family:"Be Vietnam Pro",system-ui,sans-serif;font-size:clamp(1.85rem,3vw,2.5rem);font-weight:800;letter-spacing:-.065em;color:#fff;margin-bottom:13px;}
.speech{max-width:360px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);border-radius:12px;padding:10px 13px;color:#e0e7ec;font-size:.76rem;}
.speech::before{display:none;}
.home-primary .level-card{padding:17px 19px;background:#fff;border-color:#e3e4de;box-shadow:none;}
.home-primary .lvl-ic{background:#e9efff;border-radius:13px;}
.home-primary .progress-track{background:#eceee8;}
.home-primary .progress-fill{background:#506ef5;border-radius:99px;}
.home-primary .two-col{gap:12px;margin-bottom:13px;}
.home-primary .goal-card,.home-primary .gift-card{min-height:86px;padding:14px!important;border-radius:16px;background:#fff;border-color:#e3e4de;box-shadow:none;}
.home-primary .goal-ring{color:#506ef5;}
.home-primary .gift-card:not(.opened){background:#e5f4a8;border-color:#e5f4a8;}
.home-primary .gift-card .gift-ic{font-size:1.65rem!important;}
.home-primary .stats-row{gap:0;margin:10px 0 16px;padding:13px 0;background:#fff;border:1px solid #e3e4de;border-radius:16px;}
.home-primary .stat{padding:2px 10px;background:transparent;border:0;border-radius:0;}
.home-primary .stat+.stat{border-left:1px solid #e7e8e2;}
.home-primary .stat .num{font-size:1.35rem;color:#172334;}
.home-primary .stat .lbl{font-size:.6rem;text-transform:uppercase;letter-spacing:.08em;color:#858b84;}
.home-primary .review-card{background:#506ef5;border-color:#506ef5;color:#fff;padding:17px 19px;box-shadow:none;}
.home-primary .review-card:not(:disabled):hover{background:#3d5ce2;}
.home-primary .review-card:disabled{background:#e9ece7;color:#65716b;border-color:#e9ece7;opacity:1;}
.home-primary .review-card>span:nth-child(2)>span:last-child{color:rgba(255,255,255,.78)!important;}
.home-primary .review-card:disabled>span:nth-child(2)>span:last-child{color:#78827b!important;}
.home-primary .due-pill{background:#d9f36a;color:#172334;}
.home-primary .wod{position:relative;overflow:hidden;padding:20px;background:#fff;border-color:#e3e4de;box-shadow:none;}
.home-primary .wod::after{content:"";position:absolute;width:90px;height:90px;right:36px;bottom:-58px;border-radius:50%;background:#f5d5be;opacity:.6;}
.home-primary .wod .heart{background:#fff0e7;}
.home-primary .wod .ru{font-family:"Be Vietnam Pro",system-ui,sans-serif;font-weight:800;color:#172334;}
.home-side{padding:4px 0 0;}
.home-side-head{padding:3px 2px 15px;}
.home-side-head .side-kicker{color:#607a20;margin-bottom:7px;}
.home-side-head h2{margin:0;color:#172334;font-size:1.5rem;letter-spacing:-.055em;line-height:1.15;}
.home-side-head p{margin:7px 0 0;color:#808780;font-size:.77rem;}
.home-side .card{padding:18px 19px!important;background:#fff;border:1px solid #e3e4de;box-shadow:none;}
.home-side .card:has(.letters-row){background:#e5f4a8;border-color:#e5f4a8;}
.home-side .letters-row{gap:8px;}
.home-side .letter-env{background:rgba(255,255,255,.7);border-color:rgba(23,35,52,.1);}
.home-side .letter-env.locked{background:rgba(255,255,255,.38);}
.home-side .badges{gap:7px;}
.home-side .badge{background:#f5f5f0;border-color:#e8e9e2;}
.home-side .heatmap{gap:4px;}
.home-side .menu-grid{gap:9px;}
.home-side .menu-card{min-height:118px;padding:14px;background:#fff;border-color:#e3e4de;border-radius:15px;box-shadow:none;}
.home-side .menu-card:hover{transform:translateY(-2px);border-color:#bdc8a1;box-shadow:0 8px 20px rgba(23,35,52,.07);}
.home-side .menu-card .ic{width:36px;height:36px;border-radius:11px;background:#edf0ff;font-size:1.25rem;}
.home-side .menu-card:nth-child(3n+2) .ic{background:#e5f4a8;}
.home-side .menu-card .t{color:#172334;font-size:.86rem;}
.home-side .menu-card .d{font-size:.68rem;color:#838a83;}
footer.love{margin-top:22px;color:#91978f;font-size:.7rem;}
body.night{background:#111b2a;background-image:none;}
body.night header.top{background:rgba(17,27,42,.95);border-bottom-color:#29364a;}
body.night header.top .logo{background:#d9f36a;}
body.night .home-side-head h2{color:#eff3f4;}
body.night .home-side-head p{color:#a1acb6;}
body.night .home-primary .level-card,body.night .home-primary .goal-card,body.night .home-primary .gift-card,body.night .home-primary .stats-row,body.night .home-primary .wod,body.night .home-side .card,body.night .home-side .menu-card{background:#1d2a3b;border-color:#314057;color:#edf2ec;}
body.night .home-primary .gift-card:not(.opened),body.night .home-side .card:has(.letters-row){background:#36432b;border-color:#465638;}
body.night .home-primary .stat .num,body.night .home-primary .wod .ru,body.night .home-side .menu-card .t{color:#edf2ec;}
body.night .home-primary .stat+.stat{border-left-color:#314057;}
body.night .home-side .letter-env,body.night .home-side .badge{background:#263449;border-color:#3a4b60;color:#edf2ec;}
body.night .home-side .menu-card .ic{background:#2b3b59;}
body.night .home-side .menu-card:nth-child(3n+2) .ic{background:#3d4b2d;}
@media(max-width:850px){
  #app{max-width:680px;padding-left:20px;padding-right:20px;}
  header.top{margin-left:-20px;margin-right:-20px;padding-left:20px;padding-right:20px;}
  .home-dashboard{grid-template-columns:1fr;gap:8px;}
  .home-primary{display:contents;}
  .home-side{display:contents;}
  .home-side-head{grid-row:auto;padding:13px 2px 7px;}
  .home-dashboard{display:flex;flex-direction:column;}
  .home-primary,.home-side{display:block;width:100%;}
  .home-side-head{margin-top:8px;}
}
@media(max-width:600px){
  #app{padding-left:14px;padding-right:14px;}
  header.top{margin-left:-14px;margin-right:-14px;padding-left:14px;padding-right:14px;}
  .hero-misa{min-height:176px;padding:18px 14px 16px 19px;}
  .hero-misa .msct{width:122px;height:122px;}
  .hero-kicker{font-size:.54rem;letter-spacing:.11em;margin-bottom:10px;}
  .hero .big{font-size:1.55rem;}
  .speech{font-size:.68rem;padding:8px 10px;}
  .home-primary .stats-row{margin-top:8px;}
  .home-side-head h2{font-size:1.35rem;}
  .home-side .menu-card{min-height:116px;}
}
@media(max-width:380px){.hero-misa .msct{width:100px;height:100px}.hero .big{font-size:1.37rem}.hero-misa{padding-left:15px}}